IMIT 21220
INSTITUTO DE MODELADO E INNOVACION TECNOLOGICA
Unidad Ejecutora - UE
congresos y reuniones científicas
Título:
Resonances in a four QDs Aharanov-Bohm interferometer with tunable interarm coupling
Autor/es:
DANIEL ADRIÁN LOVEY; DIEGO SEBASTIÁN ACOSTA CODEN; SERGIO SANTIAGO GÓMEZ; RODOLFO HORACIO ROMERO
Lugar:
Ciudad de Buenos Aires
Reunión:
Congreso; Autumn College on Non-Equilibrium Quantum Systems; 2011
Institución organizadora:
The Abdus Salam International Centre for Theoretical Physics (ICTP)
Resumen:
We study theoretically the conductance of an Aharanov-Bohm interferometer formed by four quantum dots in a ring geometry under a transverse magnetic field with a tunable coupling between the arms. A tight-binding Hamiltonian and non-equilibrium Greens functions are used to calculate the transmission coefficient. We show the conditions for the onset of antiresonances and Fano-like peaks for the various parameters of the system. The application of a Löwding partitioning technique allows us to obtain an interpretation in terms of spatial transmission pathways.
